Bit Operations using Macros

Code

#include <stdio.h>
#include <stdint.h>

// Define bitwise macros here
#define SET_BITS(x) ((x) | (1 << 2) | (1 << 7))
#define CLEAR_BIT(x) ((x) & ~((1 << 3)))
#define TOGGLE_BIT(x) (x ^ (1 << 5))

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order
    reg = SET_BITS(reg);
    reg = CLEAR_BIT(reg);
    reg = TOGGLE_BIT(reg);
    return reg;
}

int main() {
    uint8_t reg;
    scanf("%hhu", &reg);
    printf("%u", modify_register(reg));
    return 0;
}

Solving Approach